Alarm mechanism



Jane 14, 1927. 1,632,499

A. G.' F'AFPADAKIS ALARM MECHANISM Filed Dec. 5, 1925 Patented Jane 14, 1921."

51,632,499 PA-TENT LARI MECHANISM. i

l Appucationr-n1ewd December This invention relatesto a; nevi/fand im# proved alarmV mechanism, particularly of the type used to sound an alarm through thereeXtreme positions.

It is the object of this invention, among;`

other things, to provide'y a simpleandeffec- 10 tive mechanism of this character, Whereln the alarm mechanism is sofarrangedand-ad- .justedf thaty itmaybe placed.' either an."

operative or inoperative position, as desired;

i atfurther object beingto provide mechanism 1 175 that Y'will hold, the ylatch against movement in either-,its in or out positiona-ndthat maybe of parts aswill be hereinafter described .and

more-particularly pointed out in the claims.

Referring vto:the olra lwin,9;s, yin 'which' like numerals-of referencedesignatelike parts init-he severalviguresy Figure l is afplan-:view of arlock case Withv4 the cover removed showing its interior mech- .30 anism' partly inA section;

Figure 2-is'an end view thereof, the partsj in section being"takengenerally,` upon line* 2-2 of Figure 1; t i

Figure 3- is' an enlarged transverse secjacentfpartsuponline 15343 of Figurefl;

Figurefliwis anfzenlarged. viewfoffafragf" mentaryprtionfofa "door, inf-:Which the 'loekf` is: mounted,` shbWingapart-icula-rly-the `inside: of fthefdoorf and aportion of lthe mechanism forlocking .the-lateh l 1 Figuree is an enlargedplan vievvofthe rear end o-f vFthe1 lockland aportion offthe locking-mechanism.

is `the 'latch "18, which is"operatedinthesusualg To these, andiother ends, my invention y tional View of a portion ofthelck and `ad`- The bell andthe `particillar 'mechanism for 3,; 19:25., serial. r0.1 73,0%;

mannen through l a knob lgfupo'n the i s piridle,` d

20". Upon thisspindl'; tis "the l"calin plate 21` having 'nearf the outerf end thereof avcam tation of the vdoor knob connected With a' l -5 door lock, landto combine therewith;meansv` i for locking a latch thereof in either offitsv`r Slob 2,23 into, which praias ai pini 23' fik-d in the'seo'tor 24 pivfotally into'thse oft-he pinion 2,7 rotatably mount-.-

ed upon the' post 1:1,man'dthe;teethvfofwhichf mesh vinto those. offthepinion 28 with which Y v ounted'uponfth'f stud25, The'teethf26 of this sectorme'sh' is connected ,the pinion 28, theteeth .of which mesh into thoseofythe pinionl. i

Rotacin of uit kheb l19' in @aber direttion imparts a rotarymovement tothe ham` theiala'rm. y The spring, 30 between 4the upper ofthe plates 12 andftheinside of the bell `maintains the: loiver of said plates against the diskl.,

With. sufiieient pressurefto.l enable the hammery `carrier to acquire the rotary movementifof` the disk.. y K

I, provide with thismeehanism nen7 and novel means for discfonnectingthe pinions 16` and 28K, whereby the former may rotate,

freely "Without imparti-ng movement to the v latter andftherebydisengage thermechanism;- that operates the hammer carrierand `render the'alarm mechanism inoperative. Such `means consists essentially of two slides-'31 and 32, each. of Which has a head portion 33, which projects; through openings 3i1i1rl 90 Y Theinner ends of these slides i arevsupportedi andfmoveupon .the lug:

the lock case- 17.

35 and have an operative connection with each`y otherthmughv the' rock member 36, which is operatively vconnected with the-lug:y 35 bythe stud 37.k This rock member has, anopeningwat one "end to receive a studi '38' inztheslide 31 and provided Lwith a slot 39 at-itsv opposite end,:`.into which projects the studfLO-.in the slidew32. The inner 'endr411 ofthe "slide-32 is at an. angle to the axisiof' thel head portions L133, the outerw'fa'ce of- 'Which rides Vfupons: a.I similarly inclined .camface upon the "lug v35 (Figure'Q) and i terminates:

thereon moves upwardlyl-"parallel W-ithlfthe? axigof` they: post llgengages "theff 'underside' Between the slides 3l and 32 Ais a spring t3, which is tiXed to the slide 3l and is provided with a detent t4 that projects into either' one ot the two notches y-Ll-5 and 46, so as to hold the slide 32 against accidental movement in its in and out positions.

As the latch 18 and the head portions 38 ot the slides 31 and 32 project through the same tace ot' the case, obviously the alarm mechanism cannot be disconnected so as to silence the alarm when the door is closed and said tace is inaccessible The numeral il? indicates a latch ot the usual construction, with which is connected two rods 4S. which project through the cross head t9 held against movement in one direction by the lugs 50 connected with the cap 5l. On the inner end ot' each ot the rods Lle are the hiad plates 5l, between which is an open space Surrounding each ot the rods 42S is a spring which exerts its tension so as to move the latch l? to its out position. rlhe latch l-'T ismoved to its in position by the rotation ot the button 55, upon the shank 56 ot which is the hub 57, the ears 5S ot which engage the tace ot each ot the head plates 5l.

lilovablv mounted within the button 55 is a plunger 59, the inner end GO of which is reduced in diameter and is surounded by a spring (jl, which exerts its tension so as to move the plunger to its up position substantially as shown in Figure 3, wherein its outer end projects above the button 55. Projecting radially from the plunger 59, through a slot GQ in the shank 56, is a stop pin G3, which during` the rotation oit the button 55 maj7 move above or below the plane of the springs Gl, shown herein as three in number, and liXed and connected with the plate G5 secured to the cap 5-t within a recess G6 in the door 67, which recess is covered bv the plate G8 secured by screws 69, or the like.

During the rotation ot the knob or but.- ton 55 to move the latch t7 to its in position and to its out position, the outer end ot the stop pin GB passes over the heads ot the springs (5st. It, however, it is desired to lock the latch against movement in either direction, the plunger 59 is pressed inwardliv, at which time the outer end otl the stop pin G3 is passed under the head' ot the springs Gl and when this pressure is released the spring 6l moves the plunger 59 outwardly. at which time the stop pin engages one ot the springs 64cand is held against further outward movement and its inner end is either in front or in rear ot the head plates 5l., as may be predetermined.

s the open space 52 of less diameter than the plunger' 59, it is impossible tor the latch it? to be moved when being held in its position, as shown by dotted lines in Figure 5, or its out position il the plunger' is on the upper side ot the head plates 5l.

lf have shown three ot' the springs (3l, the uppermost one in Figure -tbeing used to hold the latch in its in position. the central spring when the latch is in its outermost position and the lowermost when the latch is in its innermost position. and the inner end oi1 the shank 5) with the latch parts substantially in the position shown by broken lines in Figure e 'lhe knob button 55 is upon thc` inside ol` the door and the onliv partis exposed are this knob, all ot the other parts being concealed under the plate (325.

' From the outside ot' the door the plunger 59 is released trom the j'iressnre ot the spring (Slt through a` lv'ejv T0. which project?1 into a c vlinder Tl. between which and the plungerl 59 is a link 72, the inner end ot which projects into a recess in the inner end ot plunger GO, 'substantially as shown in Figure 5. This recess is ot sutlicient depth to permit the plunger 59 to s de therein between the extremes ot its niovement.

rlhe open .space 52 between the head plates 5l is ot sutlicient size to permit the latter to pass the link 'T2 during its movement.

Irrespective ot whether in its open or closed positions, the latch ma;v be released upon the retaining mechanism by the kei' TO which rotates the plunger 5S) and releases the stop pin (53 in contact with the spring lVithin the scope ot the appended claims, the details ot this mechanism may be modified without depaiting` Atrom the spirit ot in v invention.

lllhat I claim as new and desire to secure by Letters Patent is:-

l. In a device ot the character described having a case, a latch, means tor actuatingl the latch; an alarm mechanism having an operative connection with and set in motion b v the movement ol' the latch actuatingl means. and comprising a` bell, a han'nner to strike the bell, and hammer actuating means; and a manually controlled slide tor shitting the relative position ot the parts ot the hammer actuating means to disconnect them from each other and render the. alarm mechanism inoperative, said slide being exposed tor operation through the same tace ot the case as the. latch. wherebjv ther alarm' mechanism may be rendered inopera tive only' when the lock is in such position as to expose said tace.

ln a device ot the character descrilied: a ease having a part with a cam tace thereon within the case, a latchr and means Yt'or actuating the latch; an alarm mechanism having lou lill) an operativeconnection with and set in motion by the movement of the latch actuating k'means, and comprising a bell, ahammer to strike the bell, and hammer actuating mechanism; and means for disconnecting some of the parts of the hammer actuating mechanism, whereby the alarm mechanism is rendered inactive, comprising a plurality of slides actuated from the exterior of the case,

and the movement of one of which is controlled in part by said cam.

3. In a d evice of the character described; an alarm mechanism having a bell, va ham'- `mer to strike the bell, and hammer actuating means, comprising a gear and pinion; and

a manually controlled reciprocating device for shifting the relative position of the gear or pinion, whereby they are disconnected from each other and the alarm mechanism rendered inoperative, this device comprising a slide-that is actuated from the exterior ofv the lock and having a yoke portion, Awhich during the movement of the slide inone direction engages apart adjacent to the gear or pinion and imparts aXial movement thereto, and a second slide having an oper vative engagement withy the first slide and or pinion, whereby they are disconnected` from each otherv and the alarm Vmechanism renderedinoperative, this device comprising a slide tliatis actuated from the exterior ofv the lock and having a *yoke portion which during the inward movement of th-e slide travels in a path at substantially a right n angle to the length thereof, and engages a part adjacent to the gear or pinion and imparts axial movement thereto, and a second slide having an operative engagement with the first slide and by means of which the latter is moved in an outward direction.

5. In a device of the character described; an alarm,y mechanism having a bell. a hammer to strike the bell, and hammer actuating means, comprising a gear and pinion; and a. manually controlled reciprocating device for shifting the relative position of the gear or pinion, whereby they are disconnected from each other and the alarm mechanism rendered inoperative, this device comprising a slide that is actuated from the exterior of the lock and having a yoke portion which during the movement of the slide in one direction engages a part adjacent to the gear or pinion and imparts axial movementthereto, a second slide, a rock member connecting both of these slides, and through which inward movement of the second slide imparts an outward movement to the first slide.

6. In a device of the character described, a case liavinga partwith a cam face thereon within the case; an alarm mechanism' having a bell, a hammer to strike the bell, and hammer actuating means, comprising in part' a gear and pinion; and means as a manually controlled reciprocatory device, one end 'of` which during such reciprocation acquires a substantially right anglemovement from the said cam face and by reason thereof imparts axial movement to the pinion and renders the bell mechanism inactive.

In testimony whereof, Il have hereunto aiiXed my signature.

ANDRU Gr. PAPPADAKIS. 

